Chair Capable of Reduced Transportation Volume and Rapid Assembly

ABSTRACT

A chair capable of a reduced transportation volume and rapid assembly includes a seat cushion fixing frame and a backrest supporting frame as separate components. The seat cushion fixing frame has an end coupled with an upside-down square U-shaped element bilaterally provided with downwardly extending sections, each section concavely provided with an oblique notch. The backrest supporting frame has an end corresponding in position to the seat cushion fixing frame and penetrated by a fixedly provided bar for being received in the oblique notches of the upside-down square U-shaped element during assembly. A resilient assembly is assembled to a bottom portion of a slot formed in a horizontal section of the backrest supporting frame. The two frames and the resilient assembly can be assembled rapidly without using tools. The seat cushion fixing frame and the backrest supporting frame are detachable from each other for compact packaging, thus effectively reducing transportation and production costs thereof.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to a chair capable of a reducedtransportation volume and rapid assembly, wherein a seat cushion fixingframe and a backrest supporting frame of the chair can be assembledtogether and securely positioned relative to each other by a simplefastening operation without using tools, and wherein a resilientassembly corresponding in position to an end of the backrest supportingframe is coupled threadingly with the seat cushion fixing frame. Theseat cushion fixing frame and the backrest supporting frame arefabricated as separate elements and are detachable from each other forpackaging so as to reduce the overall package volume, to facilitatestacking during transportation, and to effectively lower transportationand production costs.

2. Description of Related Art

Referring to FIG. 1 and FIG. 2, a commercially available chair assemblytypically includes a seat cushion 10, a chair leg unit (not shown), abackrest 30, and left and right armrests (not shown). As shown in FIG.1, the seat cushion 10 is coupled to the backrest 30 by means of afixing frame 20 fastened threadingly to a bottom portion of the seatcushion 10 and a supporting frame 40 fastened threadingly to a rear sideof the backrest 30. The fixing frame 20 bearing the seat cushion 10 andthe supporting frame 40 holding up the backrest 30 are soldered togetherat overlapping sections thereof so as to form a one-piece unit, as shownin FIGS. 1 and 2. When the seat cushion fixing frame 20 and the backrestsupporting frame 40 soldered together as an individual finishedcomponent are packaged for shipment, a large package volume andconsequently high transportation costs will occur as the two frames arenot detachable from each other.

BRIEF SUMMARY OF THE INVENTION

In view of the inconvenience of the seat cushion fixing frame and thebackrest supporting frame of the conventional chair in terms offabrication, packaging, and transportation, the present inventionprovides an improvement in which a seat cushion fixing frame and abackrest supporting frame are fabricated as separate componentsdetachable from each other for packaging so as to effectively reducepackage volumes thereof, to facilitate stacking during transportation,and to lower transportation costs, and in which the seat cushion fixingframe and the backrest supporting frame are assembled together andsecurely positioned relative to each other by a simple fasteningoperation.

A primary objective of the present invention is to provide a chairincluding a seat cushion fixing frame and a backrest supporting framewhich are fabricated as separate components. Therein, the seat cushionfixing frame has an end coupled with an upside-down square U-shapedelement bilaterally provided with downwardly extending sections, eachsection concavely provided with an oblique notch. The backrestsupporting frame has an end which corresponds in position to the seatcushion fixing frame and is penetrated by and fixedly provided with abar to be received in the oblique notches of the upside-down squareU-shaped element of the seat cushion fixing frame during assembly. Inaddition, a resilient assembly is assembled to a bottom portion of aslot provided penetratingly at a predetermined position of a horizontalsection of the backrest supporting frame. The seat cushion fixing frame,the backrest supporting frame, and the resilient assembly can beassembled rapidly without using tools. Furthermore, the seat cushionfixing frame and the backrest supporting frame are detachable from eachother for packaging so as to effectively reduce package volumes thereof,to facilitate stacking during transportation, and to lowertransportation costs.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The invention as well as a preferred mode of use, further objectives,and advantages thereof will be best understood by referring to thefollowing detailed description of an illustrative embodiment inconjunction with the accompanying drawings, wherein:

FIG. 1 is a side view of a conventional chair assembly including a seatcushion fixing frame and a backrest supporting frame;

FIG. 2 is a perspective view of the conventional chair assembly depictedin FIG. 1;

FIG. 3 is a side view of a seat cushion fixing frame, a backrestsupporting frame, and a resilient assembly according to the presentinvention;

FIG. 4 is an exploded view of the seat cushion fixing frame, thebackrest supporting frame, and the resilient assembly according to thepresent invention; and

FIG. 5 is an exploded perspective view of the seat cushion fixing frame,the backrest supporting frame, and the resilient assembly according tothe present invention.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 4 and FIG. 5, a chair capable of a reducedtransportation volume and rapid assembly according to the presentinvention includes a seat cushion fixing frame 1 and a backrestsupporting frame 2 which are fabricated as separate components.

The seat cushion fixing seat 1 has a bottom portion provided with apneumatic lifting assembly 11 corresponding in position to the center ofgravity of the seat cushion fixing frame 1. (The pneumatic liftingassembly 11 is not a technical feature of the present invention andtherefore is not described in detailed herein.) The seat cushion fixingseat 1 further has an end coupled with an upside-down square U-shapedelement 12 bilaterally provided with downwardly extending sections,wherein each section is concavely provided with an oblique notch 121.

The backrest supporting frame 2 has an end which corresponds in positionto the seat cushion fixing frame 1 and is penetrated by and fixedlyprovided with a bar 21 to be received in the oblique notches 121 of theupside-down square U-shaped element 12 of the seat cushion fixing frame1 during assembly, as shown in FIG. 3.

In addition, a slot 22 is provided penetratingly at a predeterminedposition of a horizontal section of the backrest supporting frame 2. Aresilient assembly 3 is assembled to a bottom portion of the slot 22.The resilient assembly 3 includes an upper connecting element 31, aresilient element 32, a washer 33, and a lower connecting element 34, asshown in FIG. 4.

FIG. 5 illustrates how the seat cushion fixing frame 1, the backrestsupporting frame 2, and the resilient assembly 3 are assembled together.To begin with, the bar 21 fixedly provided at the end of the backrestsupporting frame 2 is put into the oblique notches 121 of theupside-down square U-shaped element 12 of the seat cushion fixing frame1, as shown in FIG. 3. Then, the resilient assembly 3 is placed againstthe bottom portion of the slot 22 provided penetratingly in thehorizontal section of the backrest supporting frame 2. A screw 35 ispassed sequentially through a hole 13 formed in the seat cushion fixingframe 1 and corresponding in position to the slot 22 formed in thehorizontal section of the backrest supporting frame 2 and a centralportion of the resilient assembly 3, before the screw 35 is fastenedwith the lower connecting element 34. Thus, the seat cushion fixingframe 1, the backrest supporting frame 2, and the resilient assembly 3are rapidly assembled into a one-piece unit without using any tools.

Referring to FIG. 4, when the seat cushion fixing frame 1, the backrestsupporting frame 2, and the resilient assembly 3 are to be packaged forshipment, the seat cushion fixing frame 1 and the backrest supportingframe 2 are detachable from each other so as to be packaged separatelyin small volumes, thus allowing the various components to be stacked upduring transportation to lower transportation costs.

1. A chair capable of a reduced transportation volume and rapid assembly, comprising a seat cushion fixing frame and a backrest supporting frame which are fabricated as separate components, the chair being characterized in that: the seat cushion fixing frame has an end coupled with an upside-down square U-shaped element bilaterally provided with downwardly extending sections, each said section being concavely provided with a notch; the backrest supporting frame has an end corresponding in position to the seat cushion fixing frame and penetrated by and fixedly provided with a bar to be received in the notches of the upside-down square U-shaped element of the seat cushion fixing frame during assembly; and a resilient assembly is assembled to a bottom portion of a slot provided penetratingly at a predetermined position of a horizontal section of the backrest supporting frame; wherein the seat cushion fixing frame, the backrest supporting frame, and the resilient assembly can be assembled rapidly without using tools, and the seat cushion fixing frame and the backrest supporting frame are detachable from each other for packaging so as to effectively reduce package volumes thereof, to facilitate stacking during transportation, and to lower transportation costs.
 2. The chair of claim 1, wherein each said notch is concavely and obliquely provided at a corresponding one of the downwardly extending sections bilaterally provided at the upside-down square U-shaped element at the end of the seat cushion fixing frame. 